import java.util.ArrayList;
import java.util.List;
import java.util.Random;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 74646
 * Date: 2022-02-23
 * Time: 19:55
 */
class Card{
    private int rank;//数字
    private String suit; //花色

    public Card(int rank, String suit) {
        this.rank = rank;
        this.suit = suit;
    }

    @Override
    public String toString() {
        return "[ " + this.suit+" " + this.rank + " ]";
    }
}

//没有大小王，1,2,3,4,……10,11,12,13
public class TestDemo2 {
    //存放牌的花色
    private static final String[] suits = {"♥","♠","♣","♦"};

    //买牌
    public static List<Card> buyCard(){
        ArrayList<Card> cards = new ArrayList<>();
        for (int i = 0; i < 4; i++) {
            for (int j = 1; j <=13 ; j++) {
               /* String suit = suits[i];
                int rank = j;
                Card card = new Card(j,suit[i]);
                cards.add(card);*/
                cards.add(new Card(j,suits[i]));
            }
        }
        return cards;
    }

    //交换牌
    private static void swap(List<Card> cards,int i,int j){
      Card  tmp = cards.get(i);
      cards.set(i,cards.get(j));
      cards.set(j,tmp);
    }
    //洗牌
    public static void shuttle(List<Card> cards){
        for (int i = cards.size()-1; i > 0 ; i--) {
            Random random = new Random();
            int ran = random.nextInt(i);
            swap(cards,i,ran);
        }
    }


    public static void main(String[] args) {
        List<Card> cards = buyCard();
        System.out.println("买牌："+cards);
        shuttle(cards);
        System.out.println("洗牌："+cards);

        System.out.println("揭牌：3个人没人轮流揭5张牌");
        ArrayList<List<Card>> hand = new ArrayList<>(); //二维数组
        List<Card> hand1 = new ArrayList<>();
        List<Card> hand2 = new ArrayList<>();
        List<Card> hand3 = new ArrayList<>();

        hand.add(hand1);
        hand.add(hand2);
        hand.add(hand3);
        //每个人轮流揭牌
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j < 3; j++) {
                Card  card = cards.remove(0);
                hand.get(j).add(card);
            }
        }
        System.out.println("1手中的牌："+hand1);
        System.out.println("2手中的牌："+hand2);
        System.out.println("3手中的牌："+hand3);
        System.out.println("剩下的牌："+cards);
    }
}
